Adding-machine.



W. F., SWEET z s. TIDBMAN.

ADDING MACHINE.

APPLICATION FILED APB. 11, 1914- Pa'en'ed Feb. 16, 1915.

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f @al 8 L f@ W. E. SWEET & S. ATIDLMAN. ADDING MACHINE.'

APPLICATION FILED APR. 11, 1914.

Patented Feb.16,1915.

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mf. ,ma Ime.. ne www mm E@ e m /Cm my. j `m W. P. SWEET & S. TIDEMAN. ADDING MACHINE.

' APPLICATION FILED `A113..11, 1914. 1,128,546., v Patented Feb. 16, 1915.

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To all whom 'it may concern.'

UNITED STATES PATENT OFFICE.

WELCOME E. SWEET ANI) SVEN TI'DEMAN, or sT. LoUIs, MIssoURI, AssIGNoEs, BY MEsNE ASSIGNMENTS, To sIMPLEX ADDING MACHINE TEXAS, A CORPORATION 0E DELAWARE.

COMPANY, OF SAN ANTONIO,

ADDING-MACHINE.

Be it known that we, VEnCoME F. SWEET and SVEN TIDEMAN, citizens of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Adding-Machines, of which the following is a full, clear, and exact description, such as ,will enable others skilled inthe art to which it appertains to make and use the same, reference being 4had to the accompanying drawings,. forming K specification, in which- Figure v1 is a plan view of our improved adding machine .with the cover. removed. Fig. 2 is a side elevationalfview of the nia-l ehine with a portion of the base and the cover in section. Fig. 3 is a'view `looking at the underside of the base of the machine. Fig.

Llis a detail section taken approximately on the line 4*4 of Fig'. 1. Fig. is a horizon- -tal section taken approximately on the line 5-5 of Fig. 2, and showing the transfer mechanism. Fig. G is ay view similar to Fig.

.5, and showing the transfer mechanism in a different position from that shown 1n Fig. 5.

Fig. 7 is an elevational view of the auxiliary disk. Fig. 8,. is `a crosssectional view taken approximately on the line 8 8 of Fig. l.

.Our invention, relates to new and useful improvements in adding machines, particu-v larly'jof the type-disclosed in Patent No. 789,688, dated May 9, 1905,'the principal ob, ject of our invention being to generally improve upon the construction of the machine shown in said patent and eto. provide 'novel means whereby'the movement of the revo` luble adding disk is positively controlledto prevent over or under rotation.

Further objects of our invent-ion are to provideA simple means for transferring' the added amounts from the disk to an auxiliary disk, which latter represents a higher order of numerals, and further to provide simple means for resetting both disks or brin iiiO' D b the same back to zero. l A

lith the above and other objects in view,

@our invention consists incertain novel fea- I' tures of construction and arrangement of parts, Ahereinafter more fully describedand claimed. i Y

Referringby. numerals tothe accompany! ing drawings, 10 designates the base of thej machine,.tlie same being approximately rec- 1 -tangular in plan view, formed preferably Specification of Letters Patent.

part of this Yportion of this united bvplates 28 and 29.

of sheet metal and Patented Feb. 16, 1915..l Application led April 11, 1914. Serial No. 831,304.

provided with a depen'ding marginal ange- 11, the lower edge of which receives a bottom plate 12.v The base thus-'constructed contains a number of opp eratingparts of the machine and supports other parts.

`Arranged above thel rear portion of the base is a transversely disposed plate 13, the ends of which are bent downward to form legs 14 which are fixed in any suitable inanner to the plate 10.. Formed in the left hand through which the numbers on the main and auxiliary disks may be observed.

Mountedfor rotation in suitable bearings on the plates 10 and 13 is a vertically disposed shaft 16, to which'is-'secured the main adding disk 17.v Arranged on top of this disk and adjacent to the edge thereof are the numerals from OOto 99 inclusive, and arranged immediately adjacent these numerals is a corresponding annular'row of Iapertures 18. 'lheseiapertures are preferably counter-sunk from the underside as shown in Fig. 4.

Formed on the centrall portion of the shaft tract-ile spring 21, the opposite end being fixed to one of the legs 14. Fixed to the plate 13 is a sight opening 15 16'is a collar 19, and loosely mounted on the shaft above this collar; is an arm 20 tothe' rear end of which is fixed one end. ofa reforward portion of this arm and projccting upwardly therefrom is `a. pin 20a which 1s adapted to enter the apertures 18 of the main disk. The forward end of this arm is bent into a semicircular loop 22 which parbar 23, the same lying beneath the periphery of the disk 17.-

tially incloses an arcuate The ends of this arcuate bar are bent real`- wardly as designated by 24e-andthe extremi7 ties' of said rearwardly. bent portions are 'piv'ota'lly mountedl in standards 25 which project upward from the plate '10 to the Sides of the shaft V1G. An arcuate key lever 'fi-ame is arranged in frc'nt'of the disk and the arcuate bar 2?),sa1dl frame comprising ate Iwall 27, the same being .concentric with an inner arcuate wall 26 and an' outer arcu'- the shaft 16 and the ends'of these walls are p downwar movement ofthe arcuate-bar 23, Fixed toV one'f the arms' 24 is the upper 'end of a l retractile coil spring 31, the lower end of which is fixed to the plate l10, thus providing ieldingm'eans for maintaining the arcuate. ar 23 at its downward limit of movement,

and against the stop 30.4 The arcuate -walls 2 6 and 27. are provided with corresponding vertically disposed slots, such as 32, and arings I have shown `eighteen' of these keys, the same being arranged in two rowsA with f the .odd numbers in 4one row .and the even .115.

numbers in theother.l It will be understood,v

of course,;that a greater .or less number of keys can be provided, if desired. an of the r ke levers 33 are fulcrnm'edfon an arcuate ro 35, the ends of which are seated in the plates 28l and 29 and arranged between the .base 10 isa compression spring 36. The

. 'lower-portions of all of the Akey levers 33 pro 'l ]ect Fig. 4.

.beneath the arcuate bar 23jas shown in Pivotally mounted on the right handv one of `the legs'14 isfthe rear end of an arm 37,

l. the forward-.portion of which terminates ad-` -jacent-'to[the plate'29, and formed integral withs'aid arm `and overlying the edge of the Vdisk 17 is a finger'38, from the end of which dependsa pin 39, the same being adapted to ,enter any one' of the series-of apertures v18.

.Formed integral with the forward' portion ofarin'37, is an' inwardly projecting 'nger l0-.which normally rests on top of the rightv hand portion 'of the arcuate bar 23. The

' upper end of .a retractile spring 41 is at- ,.tached, tdtheforward f-'portion of arm 37,

the'low'ervend of said spring being connected to'plate 10, 'thus providing means for yieldv f ingly holding the' arm `37 at .its downward .limit o f movement, and with the pin39 in one ofthe apertures 1 8. Formed integral witlrthe forward end of a'rm 37is a linger 'l'...42,beneath which-engages the horizontal V'arm of a bell crank 43, the same being fulcrnmed en the plate 29 and the vertical., vend of thisbell crank projects V.through a slot 44v in plate Fixed to thelower end downward ic.y of shaft 16 below plate' 10.*is a pinion 45 which meshes with a large pinion 46, which latter is carried by a v'spindle 147, the'ends of whichhave bearings in the plate' 10 and in a bracket 48, which shaft or spindle 51, the saine having bearings in the'plate 10 and bracket 48. Fixed 'p to`a spindle 47 is theinner end ot a spiral-' -vspring 52, the outer end of which isfixed .to the underside of the base 10, said spring Vbeing arranged so as-tg nn'wind, andI drive` the pinions 46, `52, and 45, thereby imparting rotaryl movement to the disk 17 a's the same is released by the key actuated mechanism. Loosely mounted von the shaft or.

spindle 51 is an arm 53 to the outer end of vtion of the plate 10, and connected `to said slide is a finger piece 57.. One end of a retractile spring 58 is connected to the rear end of slide 55, the opposite end of which spring is iixed'to the plate 10, and thus said slide is 'normally maintained in. its rearward limit of .movcinentor as shown in Fig. 3.

vP ivotally mountedon the rear end of link i 54 is a pawl 59, the point of 'which is adapt- 'ed to engagebetwee'n the teeth of pinion 50,

and under normal conditions4 or when the slide 55 is at its rearward limit of movement the Apoint of this pawl is maintained out of engagement with the teeth 4of pinion 50 by the engagement of'a portion of said pawl with a pin l60 which depends from the plate 10. The rear end of .a retractile spring 61 is-connected to the rear endo'f pawl 59, the forward end of said -spring being `connected to the link54. AFulcrumed on a stud 62 which depends from the plate 10 4is a lever 63, the-righty hand end of which normally bears against' therear side ofv the vertical .arrnof bell crank 43, the lower portion of -wlnch vertical arm projects through'slot 44 as hereinbefore described. The left hand vend of this lever, is bent upward-as designated by. 65 to form a finger piece, the same 'operating' through an arcuate 'slot 66 in plate 10. One end of `a retractile spring 67 is connected to the left hand portion of lever 63 and the. opposite end of said spring is fixed to a stud or bracket depending from plate 10. This spring serves to hold-the A nger piece 65 normally at the rear end of slot 466. and with the opposite end or said lever against the lower end of the vertical 'arm of bell crank 43. 4

Pivotally mounted on a portion of the bracket 48 is a pawl G8, the point of which is adapted to engage the teeth of pinion 50 and the rear endof this pawl normally bears against a linger 69 which depends vfrom the lever 63. One end of a retractile springa is connected to the rear portion.

'of pawl G8, the opposite end of said spring being attached to a bracket or pin depend-- ing from plate 10,' -and this spring serves to throw the point of p'awl 68 into engagement with the teeth of pinion 50 when the iinger from the rear end of said l 69 is disengaged awl. l

means for resetting or the bringing back our v improved machine. A 'tee .Thelmechanism just described serves as The means for transferring from the main to the auxiliary disk will now 'be described. Arranged on the plate 10 immediately beneath the plate 13 is a transversely disposed plate 70, the side edges of which are turned upward to form parallel ribs or flanges 70a. Arranged for sliding movement on top of the left hand portions of the ribs or flanges 70a is a plate 71 in which is formed an opening 72 through which the left hand one of the standards 25 projects, and formed integral with the right hand end of this plate is a ring 73 which incloses the shaft orspindle 16. Formed onthe inner edge of this ring and in alinement with the longitudinal axis of the plate 71 is a notch 77. Fixed on the shaft 16 just below the collar 19 is a plate 78, and depending therefrom is an inner arcuate flange 79 and an outer arcuate flange 80. Depending from the disk 78 is a pin 81 which extends downward within the ring 73 and as the disk 78 is rotated this pin engages in the notch 77 and oscillates or shifts the plate 71 as will be hereinafter more fully described. A lever S2 is loosely mounted on top of the plate 71, which lever is provided with an opening 83 which corresponds with the opening 72 and accommodates the cor responding standard 25 and formed integral with the left hand end of this lever is a finger 84. The right hand portion of lever- 82 is curved forward to form an arm 85 and the end of this arm is bent upward to form a iinger 86 which is adapted to engage either one of the flanges 79 and 80. Formed integral with the lever 82 and depending through the openings 83 and 72-is aV finger 87 `to which is attached one end of a retractile coil spring 88, the outer end thereof being attached to the plate 70. Formed integral with the sides of lever 82 and near the for-` ward end thereof are hooks 89 which are adapted to receive bearing pins 90, the same being seated in extensions on the sides of plate 71. Loosely mounted on a in 91 which projects inwardly from the le t hand one of the legs 14 is a disk 92, the edge of which is bent to form a rib or flange 93 and arranged on the face thereof 'are the numerals from O to 10 inclusive. Formed in the web or body of the disk 92 is a series of ten apertures 94, the samecorrespondmg with the numerals on the rim of said disk. Loosely mounted' upon pins 95 which project inwardly from the left hand leg 14 is a disk 96, the lower portion of which frictionally engages the inner face of disk 92 and projecting from the disk 96 outwardly through a pair of the apertures 94 1n disk 92 are pins or fingers 97. The top of d'sk 96l is drawii toward the corresponding leg 14 by'means of a retractile coil spring 98,

the outer end of which is attached to said4 leg 14.

The means employed for locking the disks against movement after 1000 has been added by the machine `will be now described.

. lournaled on a suitable stud 99 which projects'upward from plate 70 adjacent to the a) shaft 16 is a pinion 100 having ten teeth and fixed to said pinion is an outwardlyprojecting arm 101 which, when said pinion has made a complete revolution, engages against the shaft 16. Projecting outward from the' j shaft 16 is a pin or single tooth 102 which is adapted to engage between the teeth of pinion and move the same a distance of one tooth each time the shaft 16 is completely rotated. A spring actuated detent 8 0 `103 is mounted on the plate 70 adjacent to n pinion 100 and the free end of said detent engages between the teeth of said pinion to vieldingly hold the same in proper position.

The main disk 17 and the rear portions of 85 key levers 33 are inclosed in a suitable sheet metal housing 101, the walls of which rest upon the plate 10 and the front wall of this housing coincides with the outer arcuate wall 27 as seen in Figs. 1 and 2. This hous- 90 tion the main and auxiliary disks are posi- 9G' tioned so that zeros appear through the sight opening in the vhousing and the opening 15 in plate 13. The spring which is wound up when the disks are so positioned exerts power to rotate the disk 17- anti-clockwise 100 or in the direction indicated by the arrows on said disk in Fig. 1, but said disk is held against movement by the engagement of pin 39 in one of the apertures 18. A key lever representing the first number to be added is depressed and the inner end of said ke)7 1ever is moved upward, therebv carrying with it the arcuate bar S23-and the outer end of arm 20. As said arm is thus elevated the pin 20 will engage in one of the apertures il@ 18 and as the arcuate bar 23 reaches its upward limit of movement the right hand end of said bar engages the inger40 of arm 37, thereby elevating said arm and consequently withdrawing the pin 39 from the 115 aperture in which it has been engaged.' The power of spring 52 will now act through pinions 46 and 45 to partiallj7 rotate shaft 16 and the parts carried thereby, and as a result the main disk17 will be par- 120 tially rotated and the number corresponding to the -key lever depressed will appear through the opening 15 and corresponding opening in'the housing 10i. During this movement the loop 22 on the for-125 ward'end of arm 20 slides along the arcuate bar 23 until it engages the rear end of the key lever which has been depressed, and this forms a stop to limit the movement of the disk. As the pressure of the finger 13 to Nlts norma l, to the rear of aperture 70 against on theatnated key lever is removed the oorrespondmg s ring 36 restores the key lever position, ythereby lowering its rearvend. and permitting the arcuate bar to move downward. As this action takes place the arm 37 moves downward, thereby reengaging pin 39'in one of the apertures 18 and immediately after this engagement takes place pin 20 disengages from the aper-v ture in which it has beenengaged and imme-l diately thereafter spring 2 1 acts to return the forward end of said arm to the left hand end of arcuate bar 23. These movements are repeated as the succeeding numbers are added into the machine, and during these subsequent .movements the disk 7S moves around with'shaft l16 and the depending lug orpin 81 passes around within the right hand portion of ring 73.

Just prior tothe time of thecompletion of acompletefrevolution of thedisk 17 the pin 81 engages inthe notch 77 and moves the plate'71 Atoward the left hand, and as said plate is thus moved the leverl 82 is likewise moved toward the left hand by reasonv lof the engagement 'of the edge of plate 71 the depending inger 87 of lever 82. At this period in theoperation or just before the transfer to thelauxiliary disk takes place the rear'arcu'at'e flange 79 engagesagainst the upwardly projecting. finger SG'on the rear f endoiarm 85, and as the movement of disk 78 continuesthe lever 82 will be swung or shifted differentially upon the plate 71.. by

reason of the engagement with one Ao the pins 90 acting as a fulcrum, and which movement' is simultaneous with the movement oi plates 71`and lever 82 toward the left hand. *During` this shiftin movement the inger 84 enters one of the owermost apertures oflink-92, thereby engagingfthe lower porV the auxiliary diskengaging drawn. from the .disk 92, thereby permittirni;l

tion of disk .96 and moving the same 1ndisengage the ngers 97 from the apertures in which theyhave .been seated. This point in the operation corresponds with i the completion of a'revolution of the disk 17, and as said revolution yiscompleted 1the iinger 86 rides o' the inner arcuate iange '79, thereby permitting` the lever 82 to swing fromthe position shown by solid lines to the position shown by dotted lines inFig. 6, said lever acting'under the nfiuence of retractile spring .88, and thus the finger 84 in with disk 92 moves the same one spaceA or a` distance corresponding toone of the a ertuie's insaid disk', thereby transier- 4 ring rom the disk 1,7 and indicating 100 upon `the lever- $2` is, drawn toward the right hand under"thesiii-Qfl fluence of springySS the finger 81 is Win14" the lower portion of disk 96 to move into" engagementswith the lower portion o saidv disk -92 andrengagingjV-the fingers 97 in a meegetepair of the apertures 94, and as a result disk\` lf;

92 is locked against movement in either direction until the succeeding transfer oper' ation takes place. As the shaft 16 carrying disk 17 makes a complete revolution the. pin or tooth 10 engages between the teeth of .pinion 100, thereby moving the latter a dis- When it is desired to restore the disks 17' and 92l to their normal or zero positions, the operator engages iinger piece 65 of lever 66 thereby swinging' the lever 63 upon its ulcrum and causing the forward end of said lever to engage the lower end of the vertical arm of bell crank 43 and move the same through slot 411. As said bell crank is thus actuated the horizontal arm thereof engages finger l2.and"flelevates same,v consequently withdrawing;l pin 39 from the anerture 18 in'which it has beeny seated. This action frees or unlocks diskli' and at thesame time lug or finger 69 on lever 63 is drawn away from the 'rear end of pawl 68 so that the point thereof moves into engagement with the teeth of pinion 50. With the parts thus positioned the operator engages finger piece 57 and draws slide 55 to the forward end ofslot 5G andas a result arm 53 'is swung upon'its pivot point and pawl 59 is drawn away from pin 60 and immediately under the inuence of spring 61 the point'of said pawl engages' the teeth of pinion 50. y As these movements take place the pawl 59 partially rotates pinion 50 and the motionfthe'reo is transmitted through pinions 19 andi to shaft 47, therebyv rewind (e5 62 and draws said finger piece through slot ico ing spring 52 which was previously un.

A wound durna` the addingoperations of the machine. Simultaneously,=the reverse 'rov tary movementl imparted tol pinion 461s transmitted to pinion 46 and shaft 16. and

ira4

as a result the disk'l' is brought back to zero point; The normal or zerofposition of theniain and auxiliary disks is'determined by thef relative positions of the arm 101 with respectl tolftheshaft 16 and the position of. iinger 102* w'ithfrespect to the teeth ofpinion 100. During" therestorina of the disks to zero point thetransfer mechanism" will be' grerersely actuated5'and during `the reverse rotary movementv of disk--ftlie fingered on arm 85 willv be engaged-.bythe arcuate the auii'iliery-disk 92( lt'willrbeunderstood that where several hundreds' hevebeen add iaa-y "flange .80 in eliectina; the reverserotation ot' rae ed into the machine, it will necessitate several actuations of the finger piece 57 to restore both disks to Zero. y

Our improved adding machine is of simple construction, can .be cheaply produced, is adapted for a Wide variety of uses and provides simple and efiicient means for accurately and quickly adding up columns of figures.

It will be readily undestood that minor changes in the size, form and construction of the various parts of our improved adding machine can be made and substituted for those herein shown and described, without departing from the spirit of our invention, the scope of which is set forth in the appen ed claims.

We claim:

1./In an adding machine, a horizontally disposed revoluble adding disk, means for moving the same a predetermined distance, an auxiliary disk mounted for rotation in a vertical plane adjacent tothe edge of the first mentioned disk, means including a spring pressed pin carrying plate for nor mally holding the auxiliary disk against movement, and a spring hel'd pivotally mounted sliding finger which is actuated .byl

the first mentioned disk upon the complete rotation thereof for releasing the auxiliary disk holding means and partially rotating4 'said disk.

2. In an adding machine of the class described, the combination with a horizontally disposed revoluble adding disk, of means for actuating said disk, an auxiliary disk arranged for rotation in a vertical plane adjacent to the edge ofthe rst mentioned disk, the edge of which auxiliary disk bears numerals, there being a series of apertures formed in the body of said auxiliary disk, and means actuated by the first mentioned disk for engaging'thc apertures in the auxiliary disk to partially rotate the same.

3. In an adding machine of the class de.

scribed, an auxiliary adding disk mounted for rotation, there being a series or" apertures in the body of said disk, a spring held plate positioned to the rear of said auxiliary disk, pins on said plato, Which pins noi'- mally project through certain of the apertures in the auxiliary disk, and means adapted to enter one of the apertures in the auxiliary disk and engage the plate to release the same from said auxiliary disk, and which releasing means also imparts partial rotary movement to said auxiliary disk.

4. In an adding machine of the class described, a shaft, an adding disk carried thereby, a pinion on the shaft, a second shaft, a gear Wheel thereon, which gear wheel meshes with the pinion on the rst mentioned shaft, a spring cooperating with the second shaft, which spring normally tends lto rotate both shafts'and the disk, and manually operable ratchet and pawl means coperating with the second shaft for reversely rotating the same to rewind the spring thereupon.

In testimony whereof we hereunto afiix our signatures in the presence of two Witnesses, this 24th day of March, 1914.

WELCOME F. SIVEET. SVEN TIDEMAN.

Witnesses:

M. P. SMITH, M. A. HANDEL. 

